Oxalis purpurea

Linnaeus

Sp. Pl. 1: 433. 1753.

Common names: Purple wood-sorrel
Introduced
Synonyms: Oxalis variabilis Jacquin
Treatment appears in FNA Volume 12. Treatment on page 148. Mentioned on page 135.

Herbs perennial, acaulous, rhizomes present, slender, sparsely scaly, stolons absent, bulb solitary, 1–2.5 cm, or with clustered bulblets; bulb scales black, thickened, not prominently nerved. Leaves basal, rarely absent at flowering; petiole (1.5–) 3–5 cm; leaflets 3, green to deep purple abaxially, green adaxially, broadly obovate to obtriangular or broadly rounded-rhombic, 10–20 mm, not lobed, apex truncate to rounded or obtuse, rarely slightly emarginate, margins and abaxial surface hairy, adaxial surface glabrous, oxalate deposits absent. Inflorescences 1-flowered; scapes 1.5–6 (–8) cm, sparsely to moderately villous, hairs eglandular. Flowers tristylous; sepal apices without tubercles; petals yellow basally, usually purple to red, pink, salmon, or white, rarely yellow, distally, 25–35 mm. Capsules not seen.


Phenology: Flowering Feb–Apr.
Habitat: Waste places, especially near gardens.
Elevation: 20–100 m.

Distribution

V12 590-distribution-map.jpg

Introduced; Calif., s Africa, also in Europe, Australia

Discussion

Oxalis purpurea is widely cultivated as an ornamental because of its large, solitary flowers in many color forms, borne on short scapes barely higher than the level of the leaves. Plants of O. purpurea apparently do not produce fertile fruit in California, where it is naturalized in scattered central and southern coastal counties.

Selected References

None.

Lower Taxa

None.

"alternating" is not a number.

... more about "Oxalis purpurea"
5 cm50 mm <br />0.05 m <br /> (?) +
truncate +  and rounded or obtuse +
Guy L. Nesom +
Linnaeus +
subpalmate +  and pinnate +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
taprooted +  and fibrous-rooted +
Purple wood-sorrel +
Calif. +, s Africa +, also in Europe +  and Australia +
20–100 m. +
homostylous +  and distylous +
Waste places, especially near gardens. +
axillary +  and terminal +
whorled +  and alternate +
green;green;deep purple abaxially +
not lobed +, broadly obovate +  and obtriangular or broadly rounded-rhombic +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
orange +  and black +
yellow +, usually purple +  and red pink salmon or white +
connate +  and distinct +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Feb–Apr. +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
connate +  and distinct +
Introduced +
free +  and connate +
creeping +  and prostrate +
erect to decumbent +
distinct +
Oxalis variabilis +
Oxalis purpurea +
species +